Sample Size. In Exercises 29–36, find the sample size required to estimate the population mean.  Mean Pulse Rate of Females Data Set 1 “Body Data” in Appendix B includes pulse rates of 147 randomly selected adult females, and those pulse rates vary from a low of 36 bpm to a high of 104 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult females. Assume that we want 99% confidence that the sample mean is within 2 bpm of the population mean. a. Find the sample size using the range rule of thumb to estimate b. Assume that σ  = 12.5 bpm, based on the value of s = 12.5 bpm for the sample of 147 female pulse rates. c. Compare the results from parts (a) and (b). Which result is likely to be better?

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
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ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
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Chapter11: Data Analysis And Displays
Section11.2: Box-and-whisker Plots
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Sample Size. In Exercises 29–36, find the sample size required to estimate the population mean

Mean Pulse Rate of Females Data Set 1 “Body Data” in Appendix B includes pulse rates of 147 randomly selected adult females, and those pulse rates vary from a low of 36 bpm to a high of 104 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult females. Assume that we want 99% confidence that the sample mean is within 2 bpm of the population mean.

a. Find the sample size using the range rule of thumb to estimate

b. Assume that σ  = 12.5 bpm, based on the value of s = 12.5 bpm for the sample of 147 female pulse rates.

c. Compare the results from parts (a) and (b). Which result is likely to be better?

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